<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>

out.println(request.getServerPort())

port. <%=request.getServerPort() %>
服务器地址: <%=request.getRemoteAddr() %>
协议名称: <%=request.getProtocol() %>
断口号: <%=request.getServerPort() %>

<%--         <%
             request.setAttribute("company","华南农业大学");
             %>
 --%>
 <%
 
    String username=request.getParameter("username");
    String password=request.getParameter("password");
    Object company=request.getAttribute("company");    
 %>
    用户名: <%=username %>
    密码: <%=password %>
    公司: <%=company %>
    
    
</body>
</html>